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SUMMARY:Quantum computers challenged by many-body chaos - Alexander Altlan
 d (University of Cologne)
DTSTART:20230518T130000Z
DTEND:20230518T140000Z
UID:TALK194944@talks.cam.ac.uk
CONTACT:Jan Behrends
DESCRIPTION:From the perspective of many-body physics\, the transmon qubit
  architectures currently developed for quantum computing are systems of co
 upled nonlinear quantum resonators. A significant amount of intentional fr
 equency detuning (disorder) is required to protect individual qubit states
  against the destabilizing effects of nonlinear resonator coupling. In thi
 s talk\, we will discuss the stability of this variant of a many-body loca
 lized phase for system parameters relevant to current quantum processors. 
  An essential element in of our diagnostic toolbox are classical simulatio
 ns\, which can be run\, e.g.\, for upcoming IBM designs comprising hundred
 s of qubits. The overall conclusion of this study is that it will take con
 siderable engineering efforts to protect transmon quantum computers from t
 he destructive influence of chaotic fluctuations.
LOCATION:TCM Seminar Room
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